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Research article - Peer-reviewed, 2020

Novel Viruses Found in Antricola Ticks Collected in Bat Caves in the Western Amazonia of Brazil

Blomstrom, Anne-Lie; Luz, Hermes R.; Ohlund, Pontus; Lukenge, Matthew; Brandao, Paulo Eduardo; Labruna, Marcelo B.; Berg, Mikael


In this study, we describe the viral composition of adult Antricola delacruzi ticks collected in a hot bat cave in the state of Rondonia, Western Amazonia, Brazil. A. delacruzi ticks, are special, compared to many other ticks, in that they feed on both bats (larval blood feeding) and bat guano (nymphal and adult feeding) instead of feeding exclusively on vertebrate hosts (blood feeding). Considering this unique life-cycle it is potentially possible that these ticks can pick up/be infected by viruses not only present in the blood of viremic bats but also by virus shed through the bat guano. The viral metagenomic investigation of adult ticks showed that single-stranded negative-sense RNA viruses were the dominant group of viruses identified in the investigated ticks. Out of these, members of the Nairoviridae family were in clear majority constituting 88% of all viral reads in the data set. Genetic and phylogenetic analyses indicate the presence of several different orthonairoviruses in the investigated ticks with only distant relationship to previously described ones. In addition, identification of viral sequences belonging to Orthomyxoviridae, Iflaviridae, Dicistroviridae, Polycipiviridae, Reoviridae and different unclassified RNA viruses showed the presence of viruses with low sequence similarity to previously described viruses.


Ticks; Antricola delacruzi; virus; metagenomics; high-throughput sequencing; Nairoviridae; bats

Published in

2020, volume: 12, number: 1, article number: 48
Publisher: MDPI

Authors' information

Luz, Hermes R.
Univ Sao Paulo
Lukenge, Matthew (Lukenge, Matthew)
Swedish University of Agricultural Sciences, Department of Plant Protection Biology
Uganda Virus Research Institute
Brandao, Paulo Eduardo
Univ Sao Paulo
Labruna, Marcelo B.
Univ Sao Paulo

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